Pump.



Patented luly 25, i899. R. LUHN.

Pum P [Application led May 4, 1899.)

'No Model.)

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UNITED STATES PATENT EEICE.

RICHARD LUHN, or nAsPE, GERMANY.

PUMP.

SPECIFICATION forming pai-t of Letters Patent No. 629,577, dated Jury 25, 1899.

Application filed May 4,1899. Serial No. 715,627. (No model.)

To L7/) whom t may concern,.-

Be it known that I, RICHARD LUHN, a subject ot' the King of Prussia, Emperor of Germany, residing at Haspe, in Westphalia, in the Kingdom of Prussia and German Empire, have invented certain new and useful Improvements in Pumps, (for which I have applied for a patent in Germany, dated Febru ary 28, 1898,) of which the following a speci cation.

My invention is an improved monte-justhat is to say, an improved automatic apparatus for raising liquids-the same being adapted to alternately take in and eject a body of liquid by the action of a due and continued pressure of air or steam, 'which is intermittently admitted and cut off by an automatic val-ve and lfloat mechanism.

It is my object to simplify the construction of this class of inventions.

My improved apparatus is composed of a tank or main working vessel of simple construction and exterior float and valve attachments secu red to the side and top of said tank and having certain peculiarities of construction, arrangement, and operation.

l will describe a pump embodying my invention and then point out the novel features in the appended claim.

Reference is to be had to the accompanying drawings, forming a part of the specilication, in which similar characters of reference indicate corresponding parts in both the iigures.

Figure l is a vertical section of a pump embodying myinvention, and Fig. 2 is a sectional elevation showing a valve mechanism employed.

Referring to the drawings, A designates the main or working vessel ol' the pump, having an inlet ct at its upper portion, within which is arranged a ilap-valve a. At one side of the working vessel A is a regulator B, having a capacity very much less than the vessel A. The vessel B has communication with the vessel A through a pipe b, which extends nearly to the bottom of the vessel A. vThe two vessels have a simple construction and are connected by a casting bolted to each, so that the vessel A supports the other, B.

Arranged in the vessel B is a float c, having a rod 7c extended upward through the top of the vessel B, where it is connected to a lever e, fulcrumed on a standard C, supported on the top of the vessel A. The 4valve att-achV- ment of vessel A is composed of a casing C, attached to the standard C, into which steam is admitted through a pipe F, from which steam may pass through the outlet f and through the pipe 7L into the vessel A and onto the top of liquid that may be contained there'- in. The valvef controls the passage of steam from the inlet F to the outlet f, and from this valve f/ a stem f" extends upward and has connection with the lever. A partition a in the valve-casing separates the steam-inlet portion of the valve-casing from a chamber below the partition through which exhaust passes. This exhaust-chamber is connected by a port c' with the vessel A, and the exhaust will discharge through a pipe g. The exhau st through the port c is controlled by a valve p, having connection with the valve f', and therefore the two valves are movable together-that is, when one valve is in its closed position the othervalve will be in its Vfullyopened position.

Extended from the bottom of the vessel B is a delivery-pipe 1T, in which is a valve d', which is shown in the form of a ball-valve located in a valve-casing D. This deliverypipe t is of smaller area than the tube ZJ, for a purpose to be hereinafter described.

The operation is as follows: rlhe liquid to be elevated iiows through the inlet a into the working vessel A. As it rises in the working vessel it also rises in the tube l) and enters the regulator vessel B. the vessel B reaches to a proper height to float the valve c, Vthe said valve will commence to rise and operate the lever c to Aforce the valvef' away .from its seat, and at this time the valve p will be forced onto its seat. Steam will now enter and pass into the working ves sel A and by its pressure will force all of the water through the tube l) into the vessel B.

. While this is going on, liquid will be forced Then the liquid in IOO the pipe i, and obviously the stea-mpressure Will be maintained in the vessel B and force out the Water. This pressure will continue until the float e moves sufticiently downward to close the steax11-controlling,` valve f and open the valve p. At this time the pressure medium Will exhaust through the port c as a new supply of Water enters the Working vessel. Air will escape from the vessel B into the Working` vessel through a pipe 7;, which connects the two vessels.

p Having thus fully described my invention, claim as new and desire to secure hy Letters Patent- The improved apparatus hereinbefore de scribed, consisting' of the tanlgor Working` vessel, A, the float-chamber arranged exteriorly and secured to the side and upper portion of said tank, and having the induction-pipe l), the iloat e in said chamber, havingY stem 7V', and the valve attachment, also arranged exteriorly to the tank, the same comprising the casing' C@ having the partition a", outlet-passage c g, and the inlet-pipe h, the valve mechanism proper composed of two verticallyalined and rigidly-connected valves fp arranged respectively above and below said partition, and the pivot-ed level` e, directly connecting the valve and float stems, all as shown and described.

In testimony whereof I have hereunto set my hand in the presence of two Witnesses. RICHARD LUIIN. lllitnesses:

E. JAHN, OTTO KNIG. 

